diff --git a/bip32.c b/bip32.c
index 18bbc4e2a..cd78422b1 100644
--- a/bip32.c
+++ b/bip32.c
@@ -7,11 +7,8 @@
 #include "sha2.h"
 #include "ripemd160.h"
 
-void hdnode_from_xpub(uint8_t version_byte, uint32_t version_private, uint32_t version_public, uint32_t depth, uint32_t fingerprint, uint32_t child_num, uint8_t *chain_code, uint8_t *public_key, HDNode *out)
+void hdnode_from_xpub(uint8_t version_byte, uint32_t depth, uint32_t fingerprint, uint32_t child_num, uint8_t *chain_code, uint8_t *public_key, HDNode *out)
 {
-	out->version = version_public;
-	out->version_private = version_private;
-	out->version_public = version_public;
 	out->depth = depth;
 	out->fingerprint = fingerprint;
 	out->child_num = child_num;
@@ -22,11 +19,8 @@ void hdnode_from_xpub(uint8_t version_byte, uint32_t version_private, uint32_t v
 	hdnode_fill_address(out);
 }
 
-void hdnode_from_xprv(uint8_t version_byte, uint32_t version_private, uint32_t version_public, uint32_t depth, uint32_t fingerprint, uint32_t child_num, uint8_t *chain_code, uint8_t *private_key, HDNode *out)
+void hdnode_from_xprv(uint8_t version_byte, uint32_t depth, uint32_t fingerprint, uint32_t child_num, uint8_t *chain_code, uint8_t *private_key, HDNode *out)
 {
-	out->version = version_private;
-	out->version_private = version_private;
-	out->version_public = version_public;
 	out->depth = depth;
 	out->fingerprint = fingerprint;
 	out->child_num = child_num;
@@ -37,12 +31,9 @@ void hdnode_from_xprv(uint8_t version_byte, uint32_t version_private, uint32_t v
 	hdnode_fill_address(out);
 }
 
-void hdnode_from_seed(uint8_t version_byte, uint32_t version_private, uint32_t version_public, uint8_t *seed, int seed_len, HDNode *out)
+void hdnode_from_seed(uint8_t version_byte, uint8_t *seed, int seed_len, HDNode *out)
 {
 	uint8_t I[32 + 32];
-	out->version = version_private;
-	out->version_private = version_private;
-	out->version_public = version_public;
 	out->depth = 0;
 	out->fingerprint = 0x00000000;
 	out->child_num = 0;
@@ -61,8 +52,6 @@ int hdnode_private_ckd(HDNode *inout, uint32_t i)
 	uint8_t fingerprint[32];
 	bignum256 a, b;
 
-	inout->version = inout->version_private;
-
 	if (i & 0x80000000) { // private derivation
 		data[0] = 0;
 		memcpy(data + 1, inout->private_key, 32);
@@ -102,8 +91,6 @@ int hdnode_public_ckd(HDNode *inout, uint32_t i)
 	curve_point a, b;
 	bignum256 c;
 
-	inout->version = inout->version_public;
-
 	if (i & 0x80000000) { // private derivation
 		return 0;
 	} else { // public derivation
diff --git a/bip32.h b/bip32.h
index 4ef0c96c2..60f2fea05 100644
--- a/bip32.h
+++ b/bip32.h
@@ -4,7 +4,7 @@
 #include <stdint.h>
 
 typedef struct {
-	uint32_t version;
+//	uint32_t version;
 	uint32_t depth;
 	uint32_t fingerprint;
 	uint32_t child_num;
@@ -13,15 +13,13 @@ typedef struct {
 	uint8_t public_key[33];
 	char address[35];
 	uint8_t version_byte;
-	uint32_t version_private;
-	uint32_t version_public;
 } HDNode;
 
-void hdnode_from_xpub(uint8_t version_byte, uint32_t version_private, uint32_t version_public, uint32_t depth, uint32_t fingerprint, uint32_t child_num, uint8_t *chain_code, uint8_t *public_key, HDNode *out);
+void hdnode_from_xpub(uint8_t version_byte, uint32_t depth, uint32_t fingerprint, uint32_t child_num, uint8_t *chain_code, uint8_t *public_key, HDNode *out);
 
-void hdnode_from_xprv(uint8_t version_byte, uint32_t version_private, uint32_t version_public, uint32_t depth, uint32_t fingerprint, uint32_t child_num, uint8_t *chain_code, uint8_t *private_key, HDNode *out);
+void hdnode_from_xprv(uint8_t version_byte, uint32_t depth, uint32_t fingerprint, uint32_t child_num, uint8_t *chain_code, uint8_t *private_key, HDNode *out);
 
-void hdnode_from_seed(uint8_t version_byte, uint32_t version_private, uint32_t version_public, uint8_t *seed, int seed_len, HDNode *out);
+void hdnode_from_seed(uint8_t version_byte, uint8_t *seed, int seed_len, HDNode *out);
 
 #define hdnode_private_ckd_prime(X, I) hdnode_private_ckd((X), ((I) | 0x80000000))
 
diff --git a/tests.c b/tests.c
index 76c70a9aa..cab788f7a 100644
--- a/tests.c
+++ b/tests.c
@@ -80,7 +80,7 @@ START_TEST(test_bip32_vector_1)
 	HDNode node;
 
 	// init m
-	hdnode_from_seed(0x00, 0x0488ADE4, 0x0488B21E, fromhex("000102030405060708090a0b0c0d0e0f"), 16, &node);
+	hdnode_from_seed(0x00, fromhex("000102030405060708090a0b0c0d0e0f"), 16, &node);
 
 	// [Chain m]
 	ck_assert_int_eq(node.fingerprint, 0x00000000);
@@ -138,7 +138,7 @@ START_TEST(test_bip32_vector_2)
 	int r;
 
 	// init m
-	hdnode_from_seed(0x00, 0x0488ADE4, 0x0488B21E, fromhex("fffcf9f6f3f0edeae7e4e1dedbd8d5d2cfccc9c6c3c0bdbab7b4b1aeaba8a5a29f9c999693908d8a8784817e7b7875726f6c696663605d5a5754514e4b484542"), 64, &node);
+	hdnode_from_seed(0x00, fromhex("fffcf9f6f3f0edeae7e4e1dedbd8d5d2cfccc9c6c3c0bdbab7b4b1aeaba8a5a29f9c999693908d8a8784817e7b7875726f6c696663605d5a5754514e4b484542"), 64, &node);
 
 	// [Chain m]
 	ck_assert_int_eq(node.fingerprint, 0x00000000);
@@ -193,7 +193,7 @@ START_TEST(test_bip32_vector_2)
 	ck_assert_str_eq(node.address,     "14UKfRV9ZPUp6ZC9PLhqbRtxdihW9em3xt");
 
 	// init m
-	hdnode_from_seed(0x00, 0x0488ADE4, 0x0488B21E, fromhex("fffcf9f6f3f0edeae7e4e1dedbd8d5d2cfccc9c6c3c0bdbab7b4b1aeaba8a5a29f9c999693908d8a8784817e7b7875726f6c696663605d5a5754514e4b484542"), 64, &node);
+	hdnode_from_seed(0x00, fromhex("fffcf9f6f3f0edeae7e4e1dedbd8d5d2cfccc9c6c3c0bdbab7b4b1aeaba8a5a29f9c999693908d8a8784817e7b7875726f6c696663605d5a5754514e4b484542"), 64, &node);
 
 	// test public derivation
 	// [Chain m/0]